Geology and Mineralogy. 583 



Portions of Hopetown, Britstown, Prieska and Hay, by A. L. 

 Du Toit, pp. 161-192, 1 fig. Cape Town, 1908.— Practically 

 all of the work described in the reports mentioned has been done 

 in territory heretofore unknown to geologists, and the Survey 

 deserves much credit for its persistent study of inaccessible 

 localities. It is surprising to find that the Cape Survey has been 

 able to do such a large amount of creditable reconnaissance work, 

 with a combined salary list of less than $5,000. h. e. g. 



5. JSergensfeltet og tilstoclende Trakter i senglacial og post- 

 glacial tid ; af C. F. Koldeeup. Bergens Museums Aarbog, 

 1907, No. 14, 8°, pp. 266, map and 38 figs. — The author has made 

 a careful study of the ancient shore lines and surficial deposits 

 in the region about Bergen on the west coast of Norway, and 

 from these investigations draws certain conclusions regarding the 

 movement of the ice during the last glacial period, the elevation 

 and depression of the land with respect to the sea, and the effects 

 of these upon the life of the period as shown by faunal groups. 



The evidence shows a retreat of the ice, an interglacial period, 

 and a renewed advance of the ice, and this is general and not con- 

 fined to a single glacier. The faunal evidence is not conclusive that 

 the interglacial time was essentially warmer. Since the different 

 series of the terminal moraines in the Bergen district lie in the 

 inmost parts of the fiords, the area must have been at that time 

 comparatively free from ice, but that the glaciers attained the 

 sea is shown by the fact that these moraines are stratified, and 

 since they are 40-50 meters above the present sea-level the land 

 was then correspondingly depressed. From this the land grad- 

 ually sank to the level shown by the highest terraces which are 

 found in all the large fiords, and which the writer designates as 

 the Yoldia terraces. Then the ice retreated and the land rose to 

 about its present position, not steadily but intermittently, with 

 periods of rest which the author discusses. Morever, in post- 

 glacial time this was interrupted, by an interval of downward 

 movement, when the land stood some 10-14 meters lower than at 

 present. 



Divisions of time like those in the Christiania region cannot be 

 carried out here since only the highest shell deposits, and not the 

 corresponding clay beds with their contained fossils of post- 

 glacial time, have been elevated above the sea. Dredging, how- 

 ever, shows that they are present. Thus the available fossils are 

 not decisive of conditions. 



Finally shell deposits from Hardanger, Stord and Nordland 

 are described. 



The whole is an important addition to our knowledge of the 

 glacial geology of western Norway. l. v. p. 



6. Mikroskopishe JPhysiographie der massigen Gesteine; 

 Ergussgesteine von H. Rosenbusch. 4 te Auflage, 8°, pp. 717-1592. 

 Stuttgart, 1908. — The appearance of the first part of the 

 fourth edition of this great work has been already noted in this 

 Journal (vol. xxiii, page 394, 1907). It is now completed in the 



